It is important what comes back out: the much-quoted dictum of Chancellor Kohl was previously at the car not necessarily. Because were used instead to measure the emissions at the exhaust end, usually the data of the on board diagnostics (OBD). That will change now: from 1 July 2017 a measurement on the tailpipe is next to the OBD test again the main investigation. As the Central Association of German motor vehicle trade (ZDK) indicates a design from the Federal Ministry of transport proposes.
as exhaust special investigation (ASU) only for petrol engine introduced in 1985, the investigation was AU 1993 renamed and extended soon to diesel engines. Since late 2008 has been omitted on the exhaust gas measurement when the first registration was after January 1, 2006, and if no error codes were in the store of the electronic on board diagnosis. So a measurement was conducted according to figures of the ZDK only to about 15 percent of the vehicles really. While the car industry, which simplified OBD test for sufficient thought, penetrate the garages for years on reintroducing real measurements. With the new proposal for a directive, Transport Minister Alexander Dobrindt now follows the criticism of ZDK, TÜV and other associations. For the motorist, this also means she will be HU probably more expensive.
The "true measurement" brings but still no real security. Because this only a so-called "turbidity value" is determined in addition to the CO2 content, by measuring the light transmission of the exhaust gas. There is not a direct measurement of nitric oxide concentration or of fine dust content. According to the draft directive, however, at least even number of particles in diesel engines on the tail pipe should be measured from 2019.
Also the requirements for type tests necessary to the approval of a new model the manufacturer are in 2017 exacerbated by: from September the standard "Euro 6 d TEMP" is introduced. Then exhaust is measured on the dynamometer according to the new, stricter WLTP cycle. Next to it is measured on the exhaust in everyday traffic. This nitric oxide limit of the Euro 6 standard (80 milligrams per kilometre for diesel vehicles, 60 milligrams for petrol engines) may be exceeded only by 110 percent. (sl)